U3As4 — Properties & Data | MatWorld

U3As4

ceramic

· JVASP-20319· U3As4

U3As4 is an intermetallic ceramic compound combining uranium and arsenic, belonging to the family of uranium chalcogenides and pnictogens. This material is primarily of research and nuclear science interest rather than commercial production, studied for its physical properties relevant to nuclear fuel cycles and advanced materials development. Engineers would consider U3As4 in specialized nuclear applications or fundamental materials research where uranium-based ceramics with specific electronic and thermal characteristics are required, though its use is heavily restricted by nuclear regulations and material availability.

nuclear fuel researchuranium compoundsadvanced ceramicsmaterials science researchintermetallic compounds

Compliance & Regulations

?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	103.0	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	52.52	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	10.89	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.04200	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	143.6	-	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000130	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000170	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	14.16	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	16.13	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.7836	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

Quality & Standards

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

U3As4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control

Quality & Standards